log.c 3.4 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2017 Google, Inc
  4. * Written by Simon Glass <sjg@chromium.org>
  5. */
  6. #include <common.h>
  7. #include <command.h>
  8. #include <dm.h>
  9. #include <log.h>
  10. static char log_fmt_chars[LOGF_COUNT] = "clFLfm";
  11. static int do_log_level(struct cmd_tbl *cmdtp, int flag, int argc,
  12. char *const argv[])
  13. {
  14. if (argc > 1) {
  15. long log_level = simple_strtol(argv[1], NULL, 10);
  16. if (log_level < 0 || log_level > _LOG_MAX_LEVEL) {
  17. printf("Only log levels <= %d are supported\n",
  18. _LOG_MAX_LEVEL);
  19. return CMD_RET_FAILURE;
  20. }
  21. gd->default_log_level = log_level;
  22. } else {
  23. printf("Default log level: %d\n", gd->default_log_level);
  24. }
  25. return 0;
  26. }
  27. static int do_log_format(struct cmd_tbl *cmdtp, int flag, int argc,
  28. char *const argv[])
  29. {
  30. int i;
  31. if (argc > 1) {
  32. const char *str = argv[1];
  33. if (!strcmp(str, "default")) {
  34. gd->log_fmt = log_get_default_format();
  35. } else if (!strcmp(str, "all")) {
  36. gd->log_fmt = LOGF_ALL;
  37. } else {
  38. gd->log_fmt = 0;
  39. for (; *str; str++) {
  40. char *ptr = strchr(log_fmt_chars, *str);
  41. if (!ptr) {
  42. printf("Invalid log char '%c'\n", *str);
  43. return CMD_RET_FAILURE;
  44. }
  45. gd->log_fmt |= 1 << (ptr - log_fmt_chars);
  46. }
  47. }
  48. } else {
  49. printf("Log format: ");
  50. for (i = 0; i < LOGF_COUNT; i++) {
  51. if (gd->log_fmt & (1 << i))
  52. printf("%c", log_fmt_chars[i]);
  53. }
  54. printf("\n");
  55. }
  56. return 0;
  57. }
  58. static int do_log_rec(struct cmd_tbl *cmdtp, int flag, int argc,
  59. char *const argv[])
  60. {
  61. enum log_category_t cat;
  62. enum log_level_t level;
  63. const char *file;
  64. uint line;
  65. const char *func;
  66. const char *msg;
  67. char *end;
  68. if (argc < 7)
  69. return CMD_RET_USAGE;
  70. cat = log_get_cat_by_name(argv[1]);
  71. level = simple_strtoul(argv[2], &end, 10);
  72. if (end == argv[2]) {
  73. level = log_get_level_by_name(argv[2]);
  74. if (level == LOGL_NONE) {
  75. printf("Invalid log level '%s'\n", argv[2]);
  76. return CMD_RET_USAGE;
  77. }
  78. }
  79. if (level >= LOGL_MAX) {
  80. printf("Invalid log level %u\n", level);
  81. return CMD_RET_USAGE;
  82. }
  83. file = argv[3];
  84. line = simple_strtoul(argv[4], NULL, 10);
  85. func = argv[5];
  86. msg = argv[6];
  87. if (_log(cat, level, file, line, func, "%s\n", msg))
  88. return CMD_RET_FAILURE;
  89. return 0;
  90. }
  91. static struct cmd_tbl log_sub[] = {
  92. U_BOOT_CMD_MKENT(level, CONFIG_SYS_MAXARGS, 1, do_log_level, "", ""),
  93. #ifdef CONFIG_LOG_TEST
  94. U_BOOT_CMD_MKENT(test, 2, 1, do_log_test, "", ""),
  95. #endif
  96. U_BOOT_CMD_MKENT(format, CONFIG_SYS_MAXARGS, 1, do_log_format, "", ""),
  97. U_BOOT_CMD_MKENT(rec, CONFIG_SYS_MAXARGS, 1, do_log_rec, "", ""),
  98. };
  99. static int do_log(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
  100. {
  101. struct cmd_tbl *cp;
  102. if (argc < 2)
  103. return CMD_RET_USAGE;
  104. /* drop initial "log" arg */
  105. argc--;
  106. argv++;
  107. cp = find_cmd_tbl(argv[0], log_sub, ARRAY_SIZE(log_sub));
  108. if (cp)
  109. return cp->cmd(cmdtp, flag, argc, argv);
  110. return CMD_RET_USAGE;
  111. }
  112. #ifdef CONFIG_SYS_LONGHELP
  113. static char log_help_text[] =
  114. "level - get/set log level\n"
  115. #ifdef CONFIG_LOG_TEST
  116. "log test - run log tests\n"
  117. #endif
  118. "log format <fmt> - set log output format. <fmt> is a string where\n"
  119. "\teach letter indicates something that should be displayed:\n"
  120. "\tc=category, l=level, F=file, L=line number, f=function, m=msg\n"
  121. "\tor 'default', or 'all' for all\n"
  122. "log rec <category> <level> <file> <line> <func> <message> - "
  123. "output a log record"
  124. ;
  125. #endif
  126. U_BOOT_CMD(
  127. log, CONFIG_SYS_MAXARGS, 1, do_log,
  128. "log system", log_help_text
  129. );